11,675 Result(s)

Article

Spreading of mixed solution of fluorocarbon and hydrocarbon surfactants on oil

The surface tension and the spreading (on oil) properties of the mixed solution of anionic (or cationic) and cationic (or anionic) fluorocarbon and hydrocarbon surfactants have been studied. The anionic-cation...

Zhao Guo-**, Zhu Bu-Yao in Colloid and Polymer Science (1983)

Article

Reversed-phase high-performance liquid chromatographic separation of theα- andβ-isomers of aspartyl peptides

A high-performance liquid chromatography method is described for the separation of the α- and β-isomers of aspartyl-containing peptides such as N-benzyloxycarbonyl methyl aspartate, protected sweet dipeptide a...

Heng-Liang **, Yao Lin, Chong-** Li, Yuen-Hwa Yieh, Ai-Hsueh Chi… in Chromatographia (1983)

Article

The decay of¹⁸⁸Re

The γ-ray spectra of¹⁸⁸Re decay have been studied by using two Ge/Li/ spectrometers and a three parameters /E-E-T/ List coincidence system. The energies and relative intensities of 52 γ-rays and cascade relations...

L. Zhou, S. Wen, J. Zhao, B. Yu, B. Han… in Journal of Radioanalytical and Nuclear Che… (1984)

Article

Bestimmung von Silber in Erzen mit Hilfe der Flammen-AAS

Zhao Shishan in Fresenius' Zeitschrift für analytische Chemie (1985)

Article

Orientation in uniaxially stretched plasticized atactic polystyrene

Fourier transform infrared spectroscopy and birefringence measurements have been used to study the changes in molecular orientation which occur on drawing of plasticized as compared to pure polystyrene (PS) at...

Y. Zhao, B. Jasse, L. Monnerie in Polymer Bulletin (1985)

Article

Equilibrium between α- and β-isomers of dihydroartemisinine and its multiple-peaks in high-performance liquid chromatography

The interconversion between the α- and β-isomers and the multiple-peaks of dihydroartemisinine (dihydroqinghaosu) were investigated in reversed-phase, highperformance liquid chromatography. A convenient method...

Zhao Shishan in Chromatographia (1986)

Article

Some radical chemistry from Shanghai

** -Kui Jiang, **ng -Ya Li, Cheng -Xue Zhao… in Reviews of Chemical Intermediates (1986)

Article

Two-phase mixed indicator method for the determination of zwitterionic surfactants

The two-phase, mixed indicator method for anionic surfactants has been modified and applied to zwitterionic surfactants. The modifications entail: (i) lowering the pH; (ii) adding 95% ethanol, and (iii) increa...

Milton J. Rosen, Fulin Zhao… in Journal of the American Oil Chemists’ Soci… (1987)

Article

Brillouin Scattering Study on the single crystals ofl-arginine phosphate (LAP)

This is the first report representing Brillouin Scattering Studies on single crystals of monoclinic LAP, which is a new organic material very useful for secondary harmonic generation. The crystal elastic const...

Zheng Hao**, Tang **ao, Zhao Mingzhuo… in Zeitschrift für Physik B Condensed Matter (1987)

Article

FTIR-ATR spectroscopic determination of the distribution of surfactants in latex films

FTIR-ATR (Fourier Transform Infra-Red-Attenuated Total Reflection) has been used to analyze the surface composition of coalesced acrylic latex films. The behavior of two anionic surfactants has been characteri...

C. L. Zhao, Y. Holl, T. Pith, M. Lambla in Colloid and Polymer Science (1987)

Article

Studies on ion exchange equilibria and kinetics

The kinetics and equilibria of cation exchange HR+Na⁺=NaR+H⁺ with 001×7 strong acidic resin have been studied. The isotherm for this reaction has been determined, and the rational equilibrium constant, Ka, calcul...

Tao Zuyi, Zhao Aimin, Tong Wengong… in Journal of Radioanalytical and Nuclear Che… (1987)

Article

Studies on ion exchange equilibria and kinetics

The kinetics of cation exchange 2RH+UO ₂ ²⁺ =R₂UO₂+2H⁺ for the forward and reverse reaction with strongly acidic 001×7 resin has been studied. It was found expe...

Zhao Aimin, Tao Zuyi, Tong Wengong… in Journal of Radioanalytical and Nuclear Che… (1987)

Article

120 K superconductivity and the zero-field absorption in the BiCaSrCu₂O_x system

Onset transition temperature (123±1) K was observed in the BiCaSrCu₂O_x bulk materials prepared by means of conventional ceramic technique. The resistance and AC susceptibility measurements show that there are two...

Zhao Min-Guan, Zhao **ao-Ning, Zheng **ao-Lan in Zeitschrift für Physik B Condensed Matter (1988)

Article

Grain boundary Josephson effect in ceramic superconductor GdBa₂Cu₃O_7−y

The current-carrying nature and its response to the weak magnetic field and temperature of the highT _c ceramic superconductor GdBa₂Cu₂O_7−y have been investigated by measuring t...

Y. Zhao, S. F. Sun, Z. P. Su, H. Zhang… in Zeitschrift für Physik B Condensed Matter (1988)

Article

Spin triplet pairing in high temperature superconductors

Various superconductivity mechanisms show that the electron pair is in spin singlet (S=0) belowTc. In contrast with these, our EPR measurements show that the electron pair is in spin triplet (S=1) rather than the...

Zhao Min-Guan, Zhao **ao-Ning, Zeng **ao-Lan in Zeitschrift für Physik B Condensed Matter (1988)

Article

The synthesis of chlorine-terminated telechelic polyisobutylene

In synthesizing chlorine-terminated telechelic polyisobutylene (PIB) with a p-DCCCp-dichlorocumene/BCl₃/CH₂Cl₂ system, it is found that cycloalkylation occurs parallel with propagation. The factors leading to cyc...

Wu Guanying, Cheng Bin, Zhao Yixin in Polymer Bulletin (1988)

Article

The synthesis of chlorine-terminated telechelic polyisobutylene

This paper deals with chain transfer reactions, primarily to monomer and to inifer (p-DCC/BCl₃) in the carbocationic polymerization of isobutylene (IB). It is found that the MW and functionality of the polymer de...

Wu Guanying, Cheng Bin, Zhao Yixin in Polymer Bulletin (1988)

Article

Influence of sample concentration on the elution of monocarboxylic acids in ion-exclusion chromatography

Zhao Guoliang, Liu Zhiguang, ** Zilin in Fresenius' Zeitschrift für analytische Chemie (1989)

Article

LC-MS of enzymatic peptic haemoglobin hydrolysate produced at the pilot-plant level

A method is described for the ready identification of any peptide isolated from a complex peptic haemoglobin hydrolysate produced on the pilot-plant scale. A combination of size exclusion and reversed-phase, h...

J. -M. Piot, D. Guillochon, Q. Y. Zhao, Y. Leroy, G. Ricart, B. Fournet… in Chromatographia (1989)

Article

Modulated structure of the superconducting compounds Bi₂Sr₂Ca _n-1Cu _n O _y withn=1 and 2

The incommensurate modulated structures of high-T _c superconducting phases Bi₂Sr₂Ca _n−1Cu _n O _y (n=1 and 2) have been studied using symmetry pr...

J. Q. Li, C. Chen, D. Y. Yang, F. H. Li… in Zeitschrift für Physik B Condensed Matter (1989)